Secrets of the Sisar Run is a supplement to Star Wars: The Roleplaying Game published by West End Games. It was written by Craig Robert Carey, Shane Hensley, and Pablo Hidalgo, and was first published July 14, 1997.

The book is a campaign setting based on elements introduced in Star Wars: Shadows of the Empire. The adventures are designed for smuggler or trader characters, who become involved in the machinations of the Black Sun criminal empire.